FUMB vs. AUSM

Last updated Jul 17, 2026

FUMB (First Trust Ultra Short Duration Municipal ETF) and AUSM (Allspring Ultra Short Municipal ETF) are both Municipal Bonds funds. Both are actively managed. Over the past year, FUMB returned 2.60% vs 3.07% for AUSM. At a 0.12 correlation, their price movements are largely independent. FUMB charges 0.45%/yr vs 0.18%/yr for AUSM.

Performance

FUMB vs. AUSM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in First Trust Ultra Short Duration Municipal ETF (FUMB) and Allspring Ultra Short Municipal ETF (AUSM). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FUMB achieves a 1.63% return, which is significantly higher than AUSM's 1.46% return.

FUMB

• 1D: 0.20%
• 1M: 0.22%
• 6M: 1.32%
• YTD: 1.63%
• 1Y: 2.60%
• 3Y*: 3.02%
• 5Y*: 2.05%
• 10Y*: —

AUSM

• 1D: 0.12%
• 1M: 0.30%
• 6M: 1.24%
• YTD: 1.46%
• 1Y: 3.07%
• 3Y*: —
• 5Y*: —
• 10Y*: —

*Multi-year figures are annualized to reflect compound growth (CAGR)

FUMB vs. AUSM - Yearly Performance Comparison

	2026 (YTD)	2025
FUMB First Trust Ultra Short Duration Municipal ETF	1.63%	1.21%
AUSM Allspring Ultra Short Municipal ETF	1.46%	1.58%

Correlation

The correlation between FUMB and AUSM is 0.13, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.13
Correlation (All Time) Calculated using the full available price history since Jul 8, 2025	0.12

Return for Risk

FUMB vs. AUSM — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

FUMB

FUMB Risk / Return Rank: 97
FUMB Sharpe Ratio Rank: 96
FUMB Sortino Ratio Rank: 97
FUMB Omega Ratio Rank: 96
FUMB Calmar Ratio Rank: 98
FUMB Martin Ratio Rank: 98

AUSM

AUSM Risk / Return Rank: 97
AUSM Sharpe Ratio Rank: 98
AUSM Sortino Ratio Rank: 98
AUSM Omega Ratio Rank: 98
AUSM Calmar Ratio Rank: 96
AUSM Martin Ratio Rank: 95

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

FUMB vs. AUSM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for First Trust Ultra Short Duration Municipal ETF (FUMB) and Allspring Ultra Short Municipal ETF (AUSM). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	FUMB	AUSM	Difference
Sharpe ratio: Return per unit of total volatility	3.21	4.18	-0.97
Sortino ratio: Return per unit of downside risk	5.11	7.33	-2.22
Omega ratio: Gain probability vs. loss probability	1.72	2.38	-0.66
Calmar ratio: Return relative to maximum drawdown	11.94	7.38	+4.56
Martin ratio: Return relative to average drawdown	43.60	21.86	+21.74

FUMB vs. AUSM - Sharpe Ratio Comparison

The current FUMB Sharpe Ratio is 3.21, which is comparable to the AUSM Sharpe Ratio of 4.18. The chart below compares the historical Sharpe Ratios of FUMB and AUSM, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

FUMB vs. AUSM - Drawdown Comparison

The maximum FUMB drawdown since its inception was -2.68%, which is greater than AUSM's maximum drawdown of -0.42%. Use the drawdown chart below to compare losses from any high point for FUMB and AUSM.

Drawdown Indicators

	FUMB	AUSM	Difference
Max Drawdown Largest peak-to-trough decline	-2.68%	-0.42%	-2.26%
Max Drawdown (1Y) Largest decline over 1 year	-0.22%	-0.42%	+0.20%
Max Drawdown (3Y) Largest decline over 3 years	-0.60%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-1.25%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.19%	-0.08%	-0.11%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.06%	0.14%	-0.08%

Volatility

FUMB vs. AUSM - Volatility Comparison

First Trust Ultra Short Duration Municipal ETF (FUMB) has a higher volatility of 0.35% compared to Allspring Ultra Short Municipal ETF (AUSM) at 0.16%. This indicates that FUMB's price experiences larger fluctuations and is considered to be riskier than AUSM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FUMB	AUSM	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.35%	0.16%	+0.19%
Volatility (6M) Calculated over the trailing 6-month period	0.58%	0.46%	+0.12%
Volatility (1Y) Calculated over the trailing 1-year period	0.81%	0.74%	+0.07%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.17%	0.74%	+0.43%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.76%	0.74%	+1.02%

FUMB vs. AUSM - Expense Ratio Comparison

FUMB has a 0.45% expense ratio, which is higher than AUSM's 0.18% expense ratio.

Dividends

FUMB vs. AUSM - Dividend Comparison

FUMB's dividend yield for the trailing twelve months is around 2.76%, more than AUSM's 2.61% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018
AUSM Allspring Ultra Short Municipal ETF	2.61%	1.26%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
FUMB First Trust Ultra Short Duration Municipal ETF	2.76%	2.90%	2.86%	2.24%	1.02%	0.43%	0.94%	1.74%	0.15%

Frequently Asked Questions

Can I hold both FUMB and AUSM in my portfolio?

FUMB and AUSM have a correlation of 0.13, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FUMB or AUSM?

FUMB has higher volatility (0.35%) compared to AUSM (0.16%). In terms of maximum drawdown, FUMB dropped -2.68% vs AUSM's -0.42%.

Which ETF is better, FUMB or AUSM?

On 1-year performance, AUSM leads with 3.07% vs 2.60% for FUMB. On fees, AUSM is cheaper at 0.18% per year. On volatility, AUSM has been the lower-risk option at 0.16%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, FUMB or AUSM?

Over the 1-year period, AUSM has performed better with a 3.07% return vs 2.60%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, FUMB or AUSM?

AUSM is cheaper with a 0.18% expense ratio, compared with 0.45% for FUMB.

Which ETF pays a higher dividend yield, FUMB or AUSM?

FUMB has the higher dividend yield at 2.76%, compared with 2.61% for AUSM.

What is the main difference between FUMB and AUSM?

They also come from different issuers: First Trust and Allspring. Their fees differ too: 0.45% for FUMB and 0.18% for AUSM.

Which has better risk-adjusted returns?

AUSM currently has the higher Sharpe Ratio (4.18 vs 3.21), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.